Since Java 21, wrapper classes have played an increasingly sophisticated role in Java’s type system. Here’s everything you ...

The delegation model in Java allows for loading classes flexibly and dynamically at runtime. This is useful in environments where the class loading requirements are unknown at compile-time.

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...

JDO provides transparent persistence for Plain Old Java Objects (POJO) [FOWLER] classes, which means that we can develop and test the domain model without a database. JDO applications can be run ...